that one appears to be the same aside from the +POS BATT lead. maybe it traces back to something else but i cant see how that coulf be right cuz with the positive of both main motors hooked up directly to the +POS BATT they would be always "ON" unless the power switch cuts the GND to the motors.

this would mean as soon as you turn on the switch both motors would just turn on full blast unless the throttle circuit is on the GND side of things? which would be weird...

In my experience, there is no difference between the R3 and R5 pin out. I have both.

I have always used the pin out below. I2ob, you are correct that the POS of the two main motors share one pad. This pad is directly connected to VCC. The throttle control is indeed done via the NEG.

x777x, I have reviewed the eBay posting. If the seller insisted that the green PCB you will receive makes no difference to the Syma original red PCB, and that you have Email and asked the question and received the reply you posted, you have done all your due diligence. You should be golden. In the unfortunate event that the green PCB turn out incompatible, you have all the ammunition you need to file a claim for your money. If it works, that would be a great price. Wonder if she ships to US?

Images

as it is so cheap i will try it see if it works, i have an s107 that i striped for parts,
i have been looking at the american special edition s107 on ebay us just the cost of the air mail is more than the heli.

Sorry, Just just jumping in here, HeliPad When I do want to "jump in" or report my progrees on something Do I go someplace alse? Do'nt want to get in between others that are asking importentent questions.
Just wanted to let you know, have been flying my 107 and 026 both indoors and out! Having a blast! Even got the yiboo avastar uj4805and theyiboo 30" uj300 and have not have any problems at all! Thank you for your help

i dont have a scale yet but "feels" lighter than my other s107 with the drilling i did on the aluminum frame pieces. it seems much faster than my aluminium one also. the responsiveness is crazy i still cant believe the difference a weight reduction makes compared to the stock configuration.

2 complaints i have however is that the tail boom & upper frame pieces were not a direct fit. on the upper frame pieces i had to cut two posts (one on each side) that sit directly under the screw holes in order to get everything to fit. the post do not serve any function that i can see and are "dead weight" IMO but might pose a problem to some ppl with out a hobby knife or dremmel tool. the tail boom had no slots or mounting holes cut ether. so there is only one easy way to fasten it and that would be using glue. im sure a tail motor will fail one day so i dont see that as good solution. so all i did was use my hobby knife to ream out two small holes for the mounting screws to guide into. worked perfect and took like 30 seconds to do.

i can take some pics tonight and post em up for those that enjoy mods.

all in all, ether going with the "Swiss cheese mod" or carbon fiber kit. you cant go wrong!